Uses the Overleaf open-source code as golden reference throughout.

Project dashboard (official /tag + /project endpoints):
- Sidebar filters (all/yours/shared/archived/trashed) with the web
  client's exact filtering predicates
- Tags: create/edit/delete with the official preset palette, per-row
  chips, bulk add/remove, uncategorized view
- Archive/trash/restore/delete-forever/leave, rename, copy, zip download,
  multi-select bulk actions (parallelized)

Editor:
- Remote cursors rewritten as a layer() overlay ported from Overleaf's
  cursor-highlights — no more inline widgets disturbing line wrapping,
  cursor motion, or IME composition
- Autocomplete ported from Overleaf's completion system: official
  top-hundred snippet data, environment templates, package/class/bib
  style data (verbatim, AGPL), project-wide \ref and \cite completion,
  package commands via the official /project/:id/metadata endpoint,
  brace-aware apply behavior, official keymap precedence
- Fixed completion popup keybindings (Enter/arrows previously fell
  through to the default keymap) and dead Enter/Backspace handlers in
  latexClosing

File sync reliability:
- Two-tier compile-artifact detection: pure build noise is ignored,
  while pdf/docx/gz/bbl sync unless there is concrete local-compile
  evidence — agent-generated figure PDFs now sync (previously all PDFs
  were blanket-ignored)
- Local compile outputs are registered with the bridge so nested-root
  projects don't upload the root PDF as junk
- Upload retry with exponential backoff and permanent-failure parking,
  CSRF refresh with session validation and single-flight guard,
  periodic orphan rescan, sync status surfaced in the status bar
- Official textExtensions list (plus legacy extras) for doc-vs-file
  classification

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

The server broadcasts otUpdateApplied (with ops) to ALL clients including
the sender. Our bridge was treating its own echoed ops as remote ops and
re-applying them, causing text duplication (e.g. "simulatorimulator").

Rewrite OT handling to match Overleaf's ShareJS _onMessage pattern:
- ACK = no ops OR meta.source matches our publicId (own echo)
- REMOTE = ops from a different source
- ACK path calls onAck() without re-applying ops
- OtClient silently drops duplicate acks in synchronized state
- OtClient drops stale remote ops (version < current)
- Remove pendingEchos counter in favor of meta.source detection

Also: refresh MCP comment contexts on new-comment/delete-thread events,
add Overleaf reference repo to .gitignore.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Features:
- Electron + React + TypeScript app with Cosmic Latte theme
- CodeMirror 6 editor with LaTeX syntax highlighting
- PDF preview with pdf.js, zoom controls, SyncTeX double-click jump
- File tree with context menu (new/rename/delete/reveal)
- Overleaf Git clone with token auth + macOS Keychain storage
- Git pull/push sync for Overleaf projects
- Embedded terminal (xterm.js + node-pty) with Claude CLI integration
- LaTeX compilation via latexmk with auto package install detection
- Structured compile log (errors/warnings) with click-to-navigate
- Main document setting (auto-detect or right-click to set)
- Custom modal system (input/confirm/alert)
- Resizable panel layout (file tree | editor | PDF + terminal)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>